__author__ = 'a.oreshko'
class Film(object):

    def __init__(self,imdbnumber=None, title=None, year=None):
        self.imdbnumber = imdbnumber
        self.title = title
        self.year = year
    @classmethod
    def correct_description(cls):
        return cls(imdbnumber="8", title="Film1", year="2014")
    @classmethod
    def incorrect_description(cls):
        return cls(imdbnumber="u", title=" ", year="201xd4")
